The Mandrill (Mandrillus sphinx) is a primate of the Cercopithecidae (Old-world monkeys) family, closely related to the baboons and even more closely to the Drill. Both the Mandrill and the Drill were once classified as baboons in genus Papio, but recent research has determined that they should be separated into their own genus, Mandrillus. The Mandrill is the world's largest species of monkey. The word mandrill means "man-ape".

This is the sexual act in which the girl/guy giving you a handjob rubs too hard in turn giving you a red, raw dick. Along with the raw dick comes the inability to get off which also gives you blue balls. The combination of the two makes something terrible/nightmarish and also is similar to the face of a Mandrill monkey.

Brah, that bitch gave me a rawjob and I couldn't get off. I never thought it would happen to me, but, yes, I did receive a Mandrill.

Someone of a promiscuous nature or acting in a promiscous way. Derived directly from the species of baboon, a particularly sexually active species, who commonly have many partners.
Often used amongst (human) males as a compliment.